Secretary-General Offers Fresh Details on Proposed New Military Unit

BRUSSELS—A military unit that is on permanent high alert and can move rapidly when a crisis arises will be approved by the leaders of North Atlantic Treaty Organization when they meet in Wales this week, the secretary-general of the alliance said on Monday.

"This force can travel light, but strike hard if needed," Anders Fogh Rasmussen told reporters. This would be a "very high-readiness force able to deploy at very...